The sixth Sister of Power presents pirate-turned-vampire Viktor Brandewyne with his greatest challenge yet. Circe proves not only hard to reach: the quest she sets him is fraught with peril from the very start. He must brave a labyrinth to retrieve a puzzle box. He then must revisit each of the Sisters he's already faced. Five pieces of the box were dispersed among them by order of the Elder long before Viktor was even born. The...